<html>
<head>

</head>
<body>
<div id="container" style="border: 1px solid black;margin: 1px;">
    <div id="a" style="border: 1px solid black;margin: 1px;width: 100px;">div a</div>
    <div id="b" style="border: 1px solid black;margin: 1px;width: 100px;">div b</div>
</div>

<div id="containerB" style="border: 1px solid black;margin: 1px;">
    <span id="ba" style="border: 1px solid black;margin: 1px;width: 100px;">div a</span>
    <span id="bb" style="border: 1px solid black;margin: 1px;width: 100px;">div b</span>
</div>

<div id="containerC" style="border: 1px solid black;margin: 1px;">
    <div id="ca" style="border: 1px solid black;margin: 1px;width: 100px;display: inline;">
        <div style="width: 200px;margin: 0;">div a</div>
    </div>
    <div id="cb" style="border: 1px solid black;margin: 1px;width: 100px;display: inline;">
        <div style="width: 200px;margin: 0;">div b</div>
    </div>
</div>

<div id="containerD" style="border: 1px solid black;margin: 1px;height: 50px;">
    <div id="da" style="border: 1px solid black;margin: 1px;width: 100px;float:left;">div a</div>
    <div id="db" style="border: 1px solid black;margin: 1px;width: 100px;float:left;">div b</div>
</div>

<div id="containere" style="border: 1px solid black;margin: 1px;height: 50px;">

</div>
</body>
</html>
